Commercial Locksmith Services in Markham & the Markham area
From the office towers along Highway 7 and the retail plazas at Markville to the industrial units off Woodbine and the storefronts in Unionville, businesses across Markham depend on locks that work every time and access that is easy to control. Markham Locksmiths is a 24/7 mobile commercial locksmith serving the entire area, and our trained, insured technicians come to your workplace with a fully stocked van so most jobs are handled in a single visit. Whether you manage a single retail unit, a medical clinic, a warehouse, or a multi-tenant building, we handle the hardware that keeps your doors secure and your staff moving.
Open 24 hours, 7 days a week · Licensed, bonded & insured

Commercial doors take far more abuse than residential ones — a busy entrance can cycle hundreds of times a day, and a worn mortise lock, a sticking door knob lock, or a failing panic bar can shut down access without warning. We diagnose the real problem instead of just swapping parts, and we always confirm an exact up-front price before any work begins. Call (289) 276-8431 any hour and speak to a real person about your building's locks, keys, and exit hardware.
What we do
Commercial Mortise Locks
Heavy-duty mortise locksets rated for high-traffic commercial doors and storefronts.
Master Key Systems
Design tiered master keying so managers and staff have exactly the access they need.
Access Control & Keypads
Install electronic keypads, fobs, and buzzer entry to control who enters your premises.
Panic & Exit Devices
Fit code-compliant push-bar exit hardware to keep your business safe and inspection-ready.
Emergency Commercial Locksmith Service When Your Business Is Locked Out
A commercial lockout costs money by the minute. Staff standing outside a closed retail unit at Markville, a manager unable to open a clinic before the first appointment, or a warehouse crew waiting at a loading door off Steeles — every one of these situations needs a fast, calm response. As a mobile emergency commercial locksmith, we answer the phone around the clock and dispatch a technician to your address, not a shop where you have to wait in line.
When we arrive we start with the safe, sensible checks: confirming whether a spare key or an alternate entrance is available, verifying that you are authorized to access the premises, and assessing the door and lock before touching anything. Most commercial doors — including glass storefronts with mortise locks, aluminum frames, and standard door knob lock setups — can be opened using non-destructive methods, so damage-free entry is our default approach. If a lock has already failed internally, we explain exactly what needs replacing and why.
Because we carry common commercial cylinders, mortise bodies, and exit-device parts in the van, we can often restore secure access and finish any needed repair in the same visit. The final quote depends on your lock type, the time of day, how far we travel, and any parts required, and we confirm that price with you before starting. For a business emergency right now, call (289) 276-8431 — we answer 24/7 and give you an honest arrival window.

Master Key Systems: One Key, Controlled Access Across Your Building
A master key system lets you decide exactly who opens which doors. In a typical setup, each employee holds a key that opens only the rooms they need, while a manager's master key opens a defined group of doors, and a grand master opens everything. For a medical office near Markham Stouffville Hospital, a multi-suite building on the 404 corridor, or a restaurant with separate stock, office, and staff areas, this turns a jangling ring of keys into a clean, logical hierarchy.
We design master key systems around how your business actually operates. That means mapping out departments, shift patterns, contractors, and cleaning crews, then keying cylinders — including mortise cylinders, rim cylinders, and door knob lock cores — so access matches responsibility. Done properly, a system is easy to expand later when you add a room, a tenant, or a new hire, without re-keying the whole building.
Master keying makes the most sense when you have several doors and more than a handful of people needing different levels of access. If you only have one or two entrances, a simpler rekey or a small keyed-alike group may serve you better, and we will tell you that honestly rather than over-selling. Whichever route fits, we plan the chart carefully so a lost key never means replacing every lock you own.

High-Security and Restricted-Key Locks for Serious Access Control
Standard keys can be copied at almost any hardware counter, which is a real problem when former staff, subcontractors, or tenants may have made copies. Restricted-key and high-security cylinders solve this by using patented keyways that cannot be duplicated without your authorization. For pharmacies, cannabis retail, server rooms, cash-handling areas, and professional offices across Markham, this is often the single most valuable upgrade available.
High-security hardware also resists physical attack. Reinforced cylinders defend against picking, drilling, and bumping, and many pair with hardened strike plates and anti-pry reinforcement so the whole door assembly holds up. We fit these cylinders into existing mortise lock bodies, deadbolts, and cylindrical hardware, so you usually keep your current doors and simply upgrade the parts that matter. We install trusted hardware brands such as Schlage and, where suitable, Medeco-style restricted platforms.
When you invest in restricted keys, you gain a controlled key registry — every cut key is logged, and copies are only made on your say-so. If your business relies on knowing precisely who can get in, this level of control is hard to beat. We assess your doors, recommend the right cylinder for each opening, and confirm the full price before ordering anything.

Panic Bar Installation, Exit Devices and Fire-Code Compliance
Exit hardware is a life-safety issue, not just a convenience. Building and fire codes require that people can leave a commercial space quickly in an emergency, which is why assembly areas, larger retail units, schools, and many workplaces need panic bars — also called crash bars or exit devices — on egress doors. We handle panic bar installation on new doors and panic bar replacement when an existing device is worn, seized, or non-compliant.
Not every door uses the same device. A single storefront door might take a rim exit device, while a heavier steel or wood door often calls for a panic bar with mortise lock integration, giving you a secure latch and a keyed pull on the outside while still allowing free, push-to-exit egress from inside. Double doors and fire-rated openings have their own requirements, including where the device sits, how it latches, and whether it may be dogged open. We fit the right device for each door and make sure the exit function is smooth and reliable.
Getting exit hardware wrong can create both a safety hazard and a failed inspection. Our technicians install and adjust panic hardware so the door latches securely yet opens with a single motion under pressure, exactly as egress rules intend. If you are fitting out a new commercial space near Markham Road or upgrading an older building in Unionville, call (289) 276-8431 and we will walk your doors with you and quote the hardware you actually need.

Business Lock Rekey After Staff Turnover or a Break-In
The moment an employee leaves, loses a key, or a break-in occurs, every outstanding key becomes a liability. A business lock rekey is the fast, cost-sensible answer: we change the internal pins so old keys no longer work and issue you fresh ones, usually without replacing the entire lock. This applies to mortise cylinders, deadbolts, and door knob lock cores alike, and it can often be done across multiple doors in one appointment.
When you rekey, commercial locksmith work usually goes beyond just the front door. We look at back doors, stockrooms, offices, and any keyed-alike group, so no forgotten opening is left running an old key. After a security incident we also inspect for signs of forced entry or tampering and flag any lock, strike, or frame that was compromised and needs replacing rather than simply rekeying.
There are times a full lock change beats a rekey — for example when hardware is old, damaged, or you want to move to restricted keys at the same time. We explain the trade-offs plainly and price both options so you can decide. We also handle mailbox and post office lock change requests: if you need the post office to change the lock on a mailbox is a separate USPS/Canada Post process, but for private and building mailboxes we can rekey or replace the lock directly. The final cost depends on the number of doors, the lock types involved, and any parts needed, always confirmed up front.

Planned Lock Maintenance Programs for Busy Commercial Doors
Most commercial lock failures do not happen suddenly — they build up over months of heavy use. A door closer that drifts out of adjustment forces the latch to slam, a mortise lock that never gets lubricated starts to bind, and hinges that sag pull the door out of alignment until the bolt no longer seats. A scheduled maintenance program catches these problems while they are still cheap fixes and before they leave you locked out during business hours.
During a maintenance visit we service the whole opening: we clean and lubricate cylinders and mortise bodies, adjust door closers and strikes, tighten hinges, check exit devices for smooth operation, and test that every keyed lock throws and retracts properly. For property managers and owners with several units around Markham — from the shops near Main Street Unionville to industrial bays off Denison — we can set a routine schedule so your doors are checked before winter cold and summer humidity take their toll.
A well-maintained door lasts years longer and is far less likely to fail at the worst possible moment. We keep simple records of what we service on each visit so you always know the condition of your hardware. To set up a maintenance plan or book a one-time inspection of your commercial doors, call (289) 276-8431 and we will build a schedule around your operating hours.

Brands We Service
We install, repair and rekey all major lock brands — from everyday deadbolts to high-security cylinders.
Don’t see your brand? We service virtually every make — just call.
Before you call — what to expect
What Customers Usually Ask Before Booking a Markham Locksmith
Will you be able to handle my specific lock type, including mortise locks? Yes — our technicians work with the full range of residential and commercial hardware, including mortise lock sets, door knob locks, deadbolts, and high-security cylinders. When you call, just describe the lock and door type so we can confirm on the spot.
How is the price determined? Your quote is shaped by a few honest factors: the type of lock or vehicle involved (a mortise lock service differs in labour from a simple door knob lock rekey), whether the call is during regular hours or overnight, your location within Markham relative to our technician, and any parts or cylinders needed. We confirm an exact up-front price before a single tool is touched — no surprises on the invoice.
How do I prove I own the property or vehicle? This is a question we genuinely welcome. We ask for a piece of government-issued photo ID and, where practical, supporting ownership documents such as a lease agreement, title, or utility bill. This step protects you as much as it protects us, and we apply it consistently on every call. If you are locked out right now and need guidance while you wait, call us at (289) 276-8431 — we answer around the clock.
Can you actually come out right now, day or night? We operate 24/7 across Markham, including holidays and late nights. Our mobile service covers neighbourhoods from Unionville and Milliken Mills to Cornell and Greensborough, so a technician is generally already on the road somewhere nearby. Call (289) 276-8431 and we will tell you where our closest available technician is at that moment.
How Our Quote Process Works — Transparent Pricing for Every Locksmith Markham Job
Step 1 — Tell us exactly what you need. When you call (289) 276-8431, a real person picks up and asks a few focused questions: your address, the type of lock or vehicle (mortise lock, door knob lock, car make and model, commercial door hardware, etc.), and a brief description of the situation. The more specific you are, the more accurate the quote we can offer.
Step 2 — We factor in everything that affects your cost. Over the phone we consider the service type, the hardware involved, time of day, and how far our nearest technician is from your location in Markham. There are no hidden call-out fees added later — all relevant factors are accounted for in this step.
Step 3 — You receive a confirmed price before we start. Once the technician arrives and verifies the lock or situation in person, they state the exact price out loud and wait for your go-ahead. For straightforward jobs the phone estimate and the on-site price match. If something unexpected is found — say, a damaged mortise lock housing that needs a replacement part — the technician explains it and gives you an updated figure before proceeding.
Step 4 — Work begins only on your approval. You are never obligated to continue if the confirmed price does not suit you. If you give the green light, the technician gets to work. Payment is collected after the job is complete and you are satisfied with the result.
What to Expect from a Markham Locksmiths Technician On-Site
A realistic arrival window, communicated clearly. When you book, we give you an estimated arrival window based on where our technician is at that moment relative to your Markham address — whether that is a home near Highway 7 and Woodbine, a commercial property along Kennedy Road, or a parking lot in the Cornell Centre area. If traffic or a delay shifts that window, we call you proactively rather than leaving you wondering.
A marked van and verifiable identification. Our technician arrives in a marked Markham Locksmiths vehicle and carries photo identification. Before any work begins, you are welcome to ask to see it. This matters especially for after-hours emergency locksmith calls when you are letting someone into your home or business at 2 a.m.
A plain-language walkthrough before and during the work. The technician will explain exactly what needs to be done — whether that is rekeying a mortise lock, replacing a worn door knob lock cylinder, programming a transponder key, or servicing commercial door hardware — and will answer any questions you have along the way. You will not be handed a completed invoice with no explanation of what changed.
A tidy, tested finish. Before leaving, the technician tests the lock or key several times in front of you to confirm it functions correctly. Any packaging, worn hardware, or debris from the job is removed from your property. If a new lock was installed — a Schlage or Kwikset deadbolt, a replacement mortise lock set, or a commercial locksmith-grade cylinder — you receive all keys cut and confirmed working before the technician closes the van door.
Service area
Areas we cover around Markham
Based in Markham, we reach the Markham area fast — 24/7. Don’t see your street? Call us, we very likely cover it.
(289) 276-8431Frequently asked questions
How fast can you reach my Markham business in an emergency?
We are a mobile team dispatched from within the Markham area, so response times are typically short for locations across the city, from Milliken and Cornell to Cathedraltown and the Highway 7 corridor. Exact arrival depends on time of day, traffic, and where your business is located, and we give you an honest arrival window when you call. We answer the phone 24 hours a day at (289) 276-8431.
What determines the price of commercial locksmith work?
The final quote depends on the type of lock or exit device, whether it is a rekey or a full replacement, the time of day, how far we travel to you, and any parts required. We assess the job first and confirm an exact up-front price before starting any work, so there are no surprises. We do not quote real numbers over the phone without understanding your doors, because that would not be fair or accurate.
Should I rekey my locks or replace them after an employee leaves?
If your hardware is in good condition, a business lock rekey is usually faster and more economical — we change the pins so old keys stop working and give you new ones. A full lock change makes more sense when the hardware is worn or damaged, or when you want to upgrade to restricted keys at the same time. We explain both options and let you decide based on your building and budget.
Can you install or replace a panic bar to meet fire-code egress rules?
Yes. We handle both panic bar installation and panic bar replacement, including rim exit devices and panic bars integrated with a mortise lock on heavier doors. We fit and adjust the hardware so the door latches securely but opens with a single push from inside, which is exactly what egress requirements call for. We will walk your doors and recommend the correct device for each opening.
What is the difference between a mortise lock and a standard door knob lock?
A mortise lock fits into a pocket cut inside the edge of the door and combines a latch and deadbolt in one strong body, which is why it is common on commercial and glass storefront doors. A door knob lock is a simpler cylindrical unit that sits through a bored hole and is more common on interior and lighter doors. We service, rekey, and replace both, and can advise which is right for a given opening.
Can you change the lock on a mailbox or post office box?
For private and building mailboxes we can rekey or replace the lock directly during a visit. Changing the lock on an official post office box is handled through the postal service rather than an outside locksmith, so for those we point you to the correct process. For any mailbox you own or manage, call (289) 276-8431 and we will sort it out.
Do you offer master key systems for multi-tenant or multi-room buildings?
Yes. We design master key systems so each person opens only the doors they need while managers hold keys that open defined groups, all the way up to a grand master. We plan the chart so it can grow as you add rooms or staff, and we can pair it with restricted keys so copies cannot be made without your authorization. This works well for offices, clinics, restaurants, and buildings with several suites.
Are your technicians insured and trained for commercial work?
Our technicians are trained, experienced, and insured, and they work on commercial hardware every day — from mortise locks and exit devices to master key systems and high-security cylinders. We focus on damage-free entry wherever possible and on doing the job correctly the first time. You are welcome to ask about our team and our approach when you call.